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A prefilled syringe

A syringe and pre-filling technology, applied in the field of medical devices, can solve the problems of complex structure and manufacturing process, long injection time, inconvenient use, etc., and achieve the effects of avoiding fat hyperplasia, short injection time and improving reliability.

Active Publication Date: 2015-08-12
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a disposable multi-needle injection needle. On the one hand, it solves the problem that the injection liquid that exists when the existing disposable injection needles for insulin pens are used is too concentrated under the skin, resulting in slow absorption, easy to cause induration under the skin at the injection site, Easy to leak, long injection time and inconvenient use, on the other hand, solve the problems of complex structure and manufacturing process and high cost of existing array injection needles

Method used

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  • A prefilled syringe
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 As shown, a disposable multi-barrel injection needle provided by the embodiment of the present invention includes a needle hub 1, three needle tubes 2, a needle tube fixing member 9, a positioning clamping wall 6, a needle tube protective sleeve 11, a needle hub protective sleeve 12 and a sealing Material layer 13; the needle base 1 is a cylindrical tube 5 with an opening at one end and a top cover 3 at the other end, and a through hole 4 is opened on the top cover 3 of the needle base 1; the needle tube 2 passes through the top of the needle base 1 The through hole 4 of the cover 3 is fixedly arranged on the top cover 3 of the needle holder 1 through the needle tube fixing member 9 in an array. Both ends of the needle tube 2 have needle points, and the structures of the needle points at both ends can be different. The needle point is used for piercing the skin and injecting, and the needle point placed in the cylindrical tube 5 is used for piercing the...

Embodiment 2

[0047] This embodiment provides another disposable multi-barrel injection needle, which is different from Embodiment 1 mainly in the number of through holes 4 on the top cover 3 of the needle holder, the structure of the needle tube fixing member 9 and the positioning clamping wall 6 .

[0048] Such as Figure 5 As shown, three arrays of through holes 4 are set on the top cover 3 of the needle holder 1, and the three stainless steel needle tubes 2 with needle tips at both ends are directly fixed to the needles with the array of through holes 4 respectively by using epoxy resin structural adhesive. On the seat top cover 3, the base plate part 7 and the filling part 10 of the needle tube fixing part 9 are both epoxy resin structural adhesives. Formed in the hole 4 and on the top cover 3 of the needle hub, the needle tube fixing member 9 can be well bonded to the inner wall of the through hole 4 and the positioning clamping wall 6 , so there is no need to set a groove 8 on the po...

Embodiment 3

[0058] Such as Figure 10As shown, this embodiment provides a prefilled syringe including the disposable multi-barrel injection needle in the above embodiment, which is composed of a disposable multi-barrel injection needle and an injection fluid reservoir, and the injection fluid reservoir and the cylindrical barrel 5 The inner wall of the cylinder is matched and relatively movable. The injection reservoir includes a cylinder body, an elastomer layer 16 and a piston 17. Openings are provided on the top and bottom of the cylinder body. The opening on the top of the cylinder body corresponds to the needle tube 2. The elastomer layer 16 is located at The top of the cylinder is used to seal the opening of the top of the cylinder. At the same time, the elastomer layer 16 is easy to be pierced by the needle point of the needle tube 2 in the cylindrical cylinder 5. Generally, the material of the elastomer layer 16 is rubber, and the piston 17 is arranged at the bottom of the cylinder...

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Abstract

Disclosed are a disposable multi-needle injection needle and a pre-fillable syringe having the injection needle. The injection needle comprises a needle seat (1), a locating structure, a needle fixing piece (9) and a plurality of needles (2); the needle seat (1) comprises a columnar cylinder (5) and a top cover (3), the upper and lower ends of the columnar cylinder (5) are open, the top cover (3) is arranged on the upper end of the columnar cylinder (5) and is provided with a through hole (4); the locating structure is arranged on the top cover (3); the needle fixing piece (9) is located via the locating structure; the needles (2) pass through the needle fixing piece (9) and are fixed on the needle fixing piece (9), the lower ends of the needles (2) stretch into the columnar cylinder (5) via the through hole (4) in order to pierce into an injection storage unit for obtaining the injection, the upper ends of the needles (2) extend upwards with the aim of piercing into skin and completing the injection, the plurality of needles (2) are distributed at intervals, and both the upper end and lower end of each needle (2) are provided with a bevel.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a prefilled syringe. Background technique [0002] Injection techniques and injection devices play an important role in the treatment of diabetes, even as important as the choice of insulin preparations, which is related to the success or failure of blood sugar control. Many medical staff and diabetic patients who receive insulin injections often ignore the impact of injection technique itself on blood sugar control. Clinicians often consider the reasons for failing to achieve the expected blood sugar control goals from the perspectives of insulin preparations and blood sugar self-monitoring, but ignore the impact of injection technology and injection devices on blood sugar control, and the process of insulin entering the human body through injection devices is A very important link. Due to differences in the absorption of insulin by various parts of the human body,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/32A61M5/46A61M5/178
CPCA61M5/178A61M5/46A61M5/32A61M5/3298A61M5/288
Inventor 岳瑞峰王燕
Owner TSINGHUA UNIV
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